Qi Zhang^1,#, Pengtao Li^2,#, Aiying Liu¹, Shaoqi Li¹, Quanwei Lu², Qun Ge¹, Junwen Li¹, Wankui Gong¹, Xiaoying Deng¹, Haihong Shang^1,3, Yuzhen Shi^1,*, Youlu Yuan^1,3,*

Phyton-International Journal of Experimental Botany, Vol.90, No.3, pp. 837-858, 2021, DOI:10.32604/phyton.2021.014437

Abstract Cotton is the most widely cultivated commercial crop producing natural fiber around the world. As a critical trait for fiber quality, fiber strength principally determined during the secondary wall thickening period. Based on the developed BC₅F_3:5 CSSLs (chromosome segment substitution lines) from Gossypium hirsutum CCRI36 × G. barbadense Hai 1, the superior MBI9915 was chosen to construct the secondary segregated population BC₇F₂ with its recurrent parent CCRI36, which was subsequently subjected to Bulk segregant RNA-sequencing (BSR-seq) for rapid identification of candidate genes related to fiber strength. A total of 4 fiber-transcriptome libraries were separately constructed and sequenced, including two parents… More >

Pengtao Li^1,2,#,*, Quanwei Lu^1,#, Xianghui Xiao³, Rui Yang³, Xixi Duan¹

Phyton-International Journal of Experimental Botany, Vol.90, No.1, pp. 129-144, 2021, DOI:10.32604/phyton.2021.012928

Abstract Fiber length is a critical trait that principally determines cotton spinning quality, while Upland cotton as the most widely cultivated Gossypium species around the world subjects to the relatively ordinary fiber performance. Chromosome segment substitution lines (CSSLs) have been introduced in cotton breeding to take full advantages of superior fiber quality and high yield from Sea Island and Upland cotton, respectively, which serve as ideal materials for elucidating the genetic mechanism of complex quantitative traits. Here, three CSSLs derived from CCRI45 (G. hirsutum) × Hai1 (G. barbadense), two superior (MBI7561 and MBI7747) and one (MBI7285) with ordinary fiber-quality, were subjected… More >